1. Maybe you've missed some lines with Lae'zel. She doesn't mention any names, but she's bragging about her experience in bad and how good she is etc etc
2. While Gale may not be the one that had many partners before, his persistence is well known, even acknowledged by Larian themselves and they even tried to patch it already. You must be blind to don't see what even developers saw.
3. Exactly, she is completely inexperienced about normal relationships, yet totally sexually traumatized. Have you missed some lines again? Her memories were wiped again and again so she would willingly have sex with yet another partner.
4. Yes.
5. Yes.
6. This one is the only one I am not sure about. Still from what Mizora tells us and from his reaction to our romance with her we can be almost sure he was forced into sex with her.

So, all in all, the only diversity we have there is a diversity of sex trauma and/or perverseness. Weird writing to say the least.